/Engine/Source/Editor/PropertyEditor/Public/DetailCategoryBuilder.h
Adds an external property, that is contained within aUStruct, that is not a property on the object(s) being customized
A property row for customizing the property or NULL if the property could not be found
[IDetailPropertyRow](API\Editor\PropertyEditor\IDetailPropertyRow) * AddExternalStructureProperty ( [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FStructOnScope](API\Runtime\CoreUObject\UObject\FStructOnScope) > StructData, [FName](API\Runtime\Core\UObject\FName) PropertyName, [EPropertyLocation::Type](API\Editor\PropertyEditor\EPropertyLocation__Type) Location, const [FAddPropertyParams](API\Editor\PropertyEditor\FAddPropertyParams) & Params )